Hofmann ATC 900 - 8.10 Bead breaker carriage: check and adjustment

CTC-CEN Service Manual 07-13 Rev.E
87
 Please refer to par.8.2.
 Check if the machine works fine
 Mount the protection.
8.10 BEAD BREAKER CARRIAGE: CHECK AND ADJUSTMENT
 : 30’ each one
 : Allen keys 4, 5 and 6mm, 8 and 17mm end keys, 13mm tube type key.
 : Incorrect bead breaker carriage adjustment may cause the following malfunctions:
1. Excessive play.
2. Bead breaker arms not synchronized.
3. Difficult Bead breaking operation.
TO CHECK THE BEAD BREAKER CARRIAGE:
 Check if the rollers and the bronze pads are damaged or worn out.
 If necessary loosen the setscrews and replace the damaged units.
TO ADJUST THE BEAD BREAKER CARRIAGE:
 Tighten all setscrews unless lock rigidly the carriage on the squared bar.
Move the carriage up and down and make sure that will move
unless jerking.
 In case the carriage will jerk, stop the movement and adjust the
screws. Then continue the control.
 When the carriage will move smoothly without any significant play,
block all counter nuts.
 Perform the bead breaker arm calibration.
 Check if the machine works fine.
8.11 LEAD SCREW NUT # EAM0076G10A : CHECK AND REPLACEMENT
 : 1h
 : Allen keys 4, and 5, 8 and 13mm end keys, Loctite.
 : Worn lead nut screw may cause the following malfunctions:
1. Bead breaker arms not synchronized.
2. Bead breaker arms beeper beeps when arms are locked.